Macintosh operating systems user interface

Macintosh file manager and GUI shell

user interface element

symbolic image used to represent a bomb

macOS application

Sosumi is an alert sound introduced by Apple sound designer Jim Reekes in Apple Computer's Macintosh System 7 operating system in 1991. The name is derived from the phrase "so, sue me!" because of a long running court battle with Apple Corps, the similarly named music company affiliated with the Beatles, regarding the use of music in Apple Inc.'s computer products.

drop-down menu

MultiFinder is an extension for the Apple Macintosh's classic Mac OS, introduced on August 11, 1987 and included with System Software 5. It adds cooperative multitasking of several applications at once – a great improvement over the previous Macintosh systems, which can only run one application at a time. With the advent of System 7, MultiFinder became a standard integrated part of the operating system and remained so until the introduction of Mac OS X.